Killflash for the fossdot, replaces 1 part the lens holder with 2 a modified lens holder and a press fit killflash. 

Project file shows how to do object modifier, object modifier has 0 walls, 0 top and bottom layers. Honeycomb infil with somewhere between 15-30%. remainder of object to follow the printed settings from original fossdot project. Object should be printed in the orientation shown, should load as such.